EXAMINATIONS OF APPLE STARCH. 99 



winter varieties. Hence, although a longer time is necessary to com- 

 plete the work, for the purpose of studying the chemical changes 

 occurring in apples it would seem that the winter varieties are to he 

 preferred. It must be borne in mind, however, that much of the 

 ripening in these varieties occurs after they are picked, while the sum- 

 mer varieties are more nearly ripened before picking time. 



It is also demonstrated that although there is a general similarity 

 between different varieties in their ripening, there are also well-defined 

 differences. 



